FCU Installation Operations and Maintenance Recommendations

Epic Fan Coil UnitsInstallation, Operations and Maintenance Recommendations

2 Advanced Air

Prior to Installation

Prior to installation, inspect the fan coil unit and anyaccessories to ensure that it has been transportedto, received and stored on site in good condition.

1. Examine the fan coil unit outer casing together with any accessories for cleanliness and freedom from any foreign matter.

2. Examine the fan coil unit and any accessories to establish that the protective closing panels to the fan coil unit and accessory orifices are in place and undamaged.

3. Establish that the control panel seal is intact.

4. Examine the fan coil unit and any accessories for any distortion or damage, which could inhibit the operation of the equipment.

5. Examine the inlet spigot.

6. Examine the discharge spigots to establish any degree of ovality.

7. Examine the mounting brackets/cleats to establish that they are correctly and securely located and free from damage/distortion.

Visual Examination

EPIC Fan Coil Units280mm high

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Mechanical Installation

1. Before commencing installation ensure that all transit-packaging materials are removed.

2. Ensure that any steelwork or structural slab from which the fan coil unit is to be suspended is suitable to support the weight of the fan coil unit.

3. Ensure that any fixings into steelwork or structural slab are suitable to support the weight of the fan coil unit.

4. Ensure that there is sufficient space allocation in the chosen location, such that the fan coil unit can be easily installed and such that all access panels are freely accessible.

5. Ensure that there is a minimum clearance of 500mm. between the inlet/air filter and any impervious vertical surface to ensure adequate airflow to the Fan Coil Unit, failure to do so will result in the Fan Coil Unit failing to operate correctly.

6. The fan coil unit should be lifted into position with M8 min. drop-rods/studding/all-thread passing through the mounting slots, being secured by a suitable washer, nut and lock-nut.

NB. We recommend that drop-rods/studding/all-thread does not exceed 1000 mm. in length.

7. The fan coil unit should be adjusted to ensure a fall to drain at the condensate tray.

8. The inlet spigot closing/protective plate should be removed and the leading edge visually examined for damage/distortion.

9. The inlet filters should be examined for any damage and correct location.

10. The discharge spigot closing/protective plate should be removed and the flange visually examined for damage/distortion.

11. The discharge spigot should be mated to the multiple outlet plenum and secured using suitable gasket material, bolts, washers and nuts.

Care should be exercised to ensure that no adjacent ductwork is directly supported by the fan coil unit.

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Condensate Pump (where fitted)

1. It is essential that the fan coil unit has been installed to ensure a fall to drain at the condensate tray discharge point, if this has not been achieved then the condensate pump system may not function correctly, which could result in overspill from the condensate tray and consequent damage to any materials below (suspended ceiling tiles etc.).

2. Before operating the condensate pump, the condensate tray should be cleaned to remove any building debris or contaminants which could block the outlet or pipework connecting the detection unit and pump.

3. Examine the condensate discharge outlet to ensure there are no obstructions which could prevent the free flow of water, and clean/remove obstructions if necessary.

4. Examine the location of the condensate pump to establish if it is above the level of the detection unit.

5. Examine the detection unit to establish if it has been correctly installed using the correct and purpose-made pipe fittings

6. Examine the detection unit to establish if the breather pipe is of the correct type and has been securely and correctly fitted.

7. Examine the connecting tube between the detection outlet and condensate inlet to establish if it has been correctly installed using the correct and purpose-made pipe fittings

8. Examine the discharge tub from the condensate pump to establish if it has been correctly installed using the correct and purpose-made pipe fittings including an anti-siphon device.

9. Examine the power plug on top of the condensate pump to establish if it has been correctly and securely inserted into the purpose-made socket.

10. Examine the communications plug in the underside of the condensate pump to establish if it has been correctly and securely inserted into the purpose-made socket.

Note 1: We recommend that transparent tubing to the correct specification isutilised throughout the condensate/detector unit assemblies to facilitate theidentification of any blockages due to debris, and to prevent “kinking” of the tubewhich can restrict the flow of water.

Note 2: We recommend a separate 230 Vac, single phase, 50 Hz electrical supplyvia a local 13 A switched fused spur be provided to the condensate pump.


Electrical Installation

All external wiring to this equipment should only be undertaken by a suitablyqualified electrician.

In stand-alone configuration there is only the requirement for one external powerconnection to the control panel.

Advanced Air, like most other electrical equipment manufacturers, do not publishdata on the connection of multiple fan coil units on the same radial or ring circuit.It is recommended that each fan coil unit has its own individual circuit breaker orfuse. However where this is not possible, it is recommended that no more than 4units are fed from the same circuit breaker and the circuit breaker is rated at theentire full load current plus 20% spare capacity.

It should be noted that the fan coil unit is supplied pre-wired and tested,therefore it should be unnecessary to gain access to the internal components ofthe control panel other than to make final power connection.

Access to the internal components of the control panel can be gained by removalof the control panel cover fasteners.

The internal components should be visually examined to establish if there are anydamaged or insecure items.

Electrical Requirements

Model Voltage Power Rated current Recommended protection

EPIC 600 230Vac 50Hz 300Watt 3.5 Amps 6 Amp type D (motor rated)





Notes in Installation

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1. A 230 Vac. mains connection to the terminal unit should be made using suitable cable passing through the designated cable gland in the control panel casing.

2. Relocate the control panel cover and secure the fasteners, the control panel can now be energised.

3. It should not be attempted to energise the control panel until such time that the primary air fan/air handling unit is operational.

When the control panel has been energised then after approx. 30 seconds, the motor can be heard operating.

All external wiring to this equipment should only be undertaken by a suitablyqualified electrician.

In stand-alone configuration there are no external controls connections to bemade.

Access to the internal components of the control panel should only be attemptedafter the mains power electricity supply has been disconnected.

Access to the internal components of the control panel can be gained byoperating the mains isolator (where fitted) and removal of the control panel coverfasteners.

The internal components should be visually examined to establish if there are anydamaged or insecure items.

Method of Electrical Installation

Control Wiring


Fault Finding

1. The following should only carried out by a qualified electrician.

2. Isolate the control panel and remove the control panel cover.

3. Visually check for disconnected cables or any other obvious fault.

4. Check that the mains connection terminals are secure.

5. Check that there is power at the terminals.

6. Check that the primary connections to the transformer are secure.

7. Check that the secondary connections to the transformer are secure.

8. Check for 24VAC at secondary of transformer.

9. Check that the fuse is intact, if not, replace.

10. Check that the power plug to the motor controller is secure.

11. Check that the control plug to the motor controller is secure.

12. Check that the terminals on the EPIC pcb are correctly located and secure.

13. Relocate the cover of the control panel, and secure the fasteners.

14. Operate the mains isolator (where fitted), then after approx. 30 seconds, the motor can be heard operating.

15. If the motor fails to operate contact the Advanced Air systems department for assistance.






6. Check that the 230 Vac. and 24 Vac. terminals to the transformer are secure.

7. Check that the 24 Vac. power connection terminals to the Chilled Water valve motor/actuator are secure.

8. Check that the control signal connection terminals to the Chilled Water valve motor/actuator are secure.

9. Check that the return air temperature sensor connections are secure.


11. Operate the mains isolator (where fitted).

12. The Chilled Water valve motor/actuator will operate to either its open or closed position dependent upon return air temperature.

13. If the Chilled Water valve motor/actuator fails to operate contact the Advanced Air systems department for assistance.

If the Fan Motor(s) Fails to Operate

If the Chilled Water Valve MotorFails to Operate

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6. Check that the 230 v. and 24 v. terminals to the transformer are secure.

7. Check that the 24 v. power connection terminals to the Low Pressure Hot Water valve motor/actuator are secure.

8. Check that the control signal connection terminals to the Low Pressure Hot Water valve motor/actuator are secure.

9. Check that the return air temperature sensor connections are secure.


11. Operate the mains isolator.

12. The Low Pressure Hot Water valve motor/actuator will operate to either its open or closed position dependent upon return air temperature.

13. If the Low Pressure Hot Water valve motor/actuator fails to operate contact the factory.

The filter is installed to protect the coil from particles that may be present in theair and could attach to the coil causing a blockage. Part of any maintenanceprogram where FCU are used will include for inspection, and if necessary, cleaningof FCU inlet filters. The period between inspections will depend on the use andcleanliness of the building. We recommend that filters are checked 6 monthsafter completion of a new build and then on a yearly basis. This period should beadjusted as necessary to suit the building.

If the Low Pressure Hot WaterValve Motor Fails to Operate

Air Filter


Important Safety Notes

• Before carrying out any work on the fan coil unit, it should be disconnectedfrom the electrical supply to avoid injury from electrical current. Check thatthe unit is isolated and ensure that the appropriate point of the unit for theon-site power supply is secured against being switched back on

• Before performing work on control valves or the inlet or outlet pipes, seal offthe heating or cooling medium inlet to prevent scalding. Do not commencework before the heating medium has cooled down.

• Before performing work on control valves or inlet or outlet pipes, seal off theheating or cooling medium inlet and drain the coil, only commence workwhen the coil is fully drained.

• Rotating fans can cause injury! Before performing any work on the fan coilunit, ensure that it is disconnected from the electrical supply. Ensure thatthe appropriate point for the on-site power supply is secured against beingswitched back on.

• Fan Coil Units installed in ceiling voids or at high level will be subject to theWorking at Height Regulations. Ensure that these regulations are compliedwith when installing, commissioning or maintaining the Fan Coil Unit.

• When removing the air filter from the Fan Coil Unit there is the potential ofdust inhalation, to prevent this then appropriate dust mask should be worn.

• When working on the Fan Coil Unit there can be a risk of laceration fromsharp edges on the units, the cooling fins on the coil present the biggest risk.Appropriate hand protection is recommended when working on the Fan CoilUnit.

• When working on the Fan Coil Unit there can be a Biohazard risk from anystagnant condensate which has not been drained from the condensatecollection tray. Ensure that the condensate collection tray is empty and drybefore commencing work. Appropriate dust mask and hand protection isrecommended when working on the Fan Coil Unit.

Danger from Electrical Current

Danger of Scalding

Danger of Pressure

Danger from Rotating Parts

Working at Height

Inhalation of Dust

Laceration

Biohazard

Advanced Air (UK) LtdBurrell Way, ThetfordNorfolk, IP24 3QU.

Tel: 01842 765 657Fax: 01842 753 493email: [email protected]

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www.advancedair.co.ukPart of the Nailor International Inc.

Documents

FCU Installation Operations and Maintenance Recommendations